3x-30=2x-x

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Solution for 3x-30=2x-x equation: 



3x-30=2x-x

We move all terms to the left:

3x-30-(2x-x)=0

We add all the numbers together, and all the variables

3x-(+x)-30=0

We get rid of parentheses

3x-x-30=0

We add all the numbers together, and all the variables

2x-30=0

We move all terms containing x to the left, all other terms to the right

2x=30

x=30/2

x=15

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